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Finding the Fourth Proportional to 708,625.92, 977,874.96 and 386,329.68

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Solution

The fourth proportional to 708,625.92, 977,874.96 and 386,329.68 is: 533,119.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,625.92 : 977,874.96 = 386,329.68 : x
  2. Step 2: Convert to fraction form
    708,625.92/977,874.96 = 386,329.68/x
  3. Step 3: Cross multiply
    708,625.92x = 977,874.96 × 386,329.68
  4. Step 4: Simplify right side
    708,625.92x = 377,782,120,376.81
  5. Step 5: Solve for x
    x = 377,782,120,376.81/708,625.92
  6. Step 6: Final answer
    x = 533,119.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.